mer·cu·ri·al·ism n.   Med. The syndrome produced by poisoning due to exposure to mercury, it fumes, or its compounds; mercury poisoning.  Such exposure may occur in mining or smelting, or in using mercurial compounds.
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 mercury poisoning
      n : a toxic condition caused by ingesting or inhaling mercury;
          acute mercury poisoning causes a metallic taste and
          vomiting and diarrhea and kidney problems that may lead
          to death